1997/11/30 by Hiroshi Shimahara · 6 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Fermi surface #Geometry #Magnetism #Pairing #Physics #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #Square (algebra) #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1143/jpsj.67.736
published as J. Phys. Soc. Jpn. Vol.67, No.3 (1998) pp.736-739 (Letters). · 11 pages (LaTeX, revtex.sty), 3 figures; added references
arxiv created 1998/01/19 · openalex publication_date 1998/03/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Nonuniform superconducting state due to strong spin magnetism is studied in two-dimensional type-II superconductors near the second order phase transition line between the normal and the superconducting states. The optimum spatial structure of the orderparameter is examined in systems with cylindrical symmetric Fermi surfaces. It is found that states with two-dimensional structures have lower free energies than the traditional one-dimensional solutions, at low temperatures and high magnetic fields. For s-wave pairing, triangular, square, hexagonal states are favored depending on the temperature, while square states are favored at low temperatures for d-wave pairing. In these states, orderparameters have two-dimensional structures such as square and triangular lattices.